METHOD OF HEAT-TREATING ADDITIVELY-MANUFACTURED FERROMAGNETIC COMPONENTS

• Main Authors: JOHNSON, Francis, JASSAL, Anoop Kumar, ADHARAPURAPU, Raghavendra Rao, OSAMA, Mohamed
• Format: Patent
• Language: English; French; German
• Published: 09.08.2023
• Subjects: ADDITIVE MANUFACTURING TECHNOLOGY; ADDITIVE MANUFACTURING, i.e. MANUFACTURING OFTHREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVEAGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING,STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING; ALLOYS; BASIC ELECTRIC ELEMENTS; CASTING; CHEMISTRY; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; DYNAMO-ELECTRIC MACHINES; ELECTRICITY; FERROUS OR NON-FERROUS ALLOYS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS; GENERATION; INDUCTANCES; MAGNETS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS; MAKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; METALLURGY; METALLURGY OF IRON; MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; PERFORMING OPERATIONS; POWDER METALLURGY; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES; TRANSFORMERS; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS; WORKING METALLIC POWDER

A method of heat-treating an additively-manufactured ferromagnetic component is presented and a related ferromagnetic component (150) is presented. A saturation flux density of a heat-treated ferromagnetic component (150) is greater than a saturation flux density of an as-formed ferromagnetic component (140). The heat-treated ferromagnetic component (150) is further characterized by a plurality of grains such that at least 25% of the plurality of grains have a median grain size less than 10 microns and 25 % of the plurality of grains have a median grain size greater than 25 microns.